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+Keep in mind that this feature is to prevent leakage of your non-internet-facing IP adresses. The purpose of this feature is not to hide your current internet-facing IP address -- so be cautious to not misinterpret the results of the tests above. For example, if you use a VPN, your internet-facing IP address is that of the VPN, so your ISP-provided IP address should not be visible to outside world with this setting checked. However, if you are not behind any VPN or proxy, your ISP-provided IP address will be visible regardless of this setting.
+
+#### Caveats
+
+##### Chromium-based browsers
+
+It has been reported that Google Hangout and Facebook messenger do not work properly when this setting is enabled (issue [#757](https://github.com/gorhill/uBlock/issues/757), [#681](https://github.com/gorhill/uBlock/issues/681)).
+
+The feature works only on version 42 and above.
+
+##### Firefox
+
+WebRTC is required for Firefox Hello to work properly. Thus Firefox Hello won't work if you enable this setting.